79 posts
Posted 01 September 2014 - 11:06 AM
Hi All,
I'm currently (slowly) coding my own OS and thought running it from within the shell seemed somewhat inelegant, so I've created a top level coroutine override in the same vain as Nevercast's. It's presented as a function that takes two arguments. The first is the function you want to be run at top level, this gets called from within a pcall so any errors can be captured. Any errors are then passed to an error handler function which can be passed as the second optional argument, though if none is specified there is a default error handler instead.
For example using the function:
Or if you didn't want rednet running in the background you could use:
From my testing this works for CC1.6+ and should hopefully work for previous versions. It can be used from within the startup program or can be run from anywhere within the shell and will still work.
Download: http://pastebin.com/iU09rXRs
I'm currently (slowly) coding my own OS and thought running it from within the shell seemed somewhat inelegant, so I've created a top level coroutine override in the same vain as Nevercast's. It's presented as a function that takes two arguments. The first is the function you want to be run at top level, this gets called from within a pcall so any errors can be captured. Any errors are then passed to an error handler function which can be passed as the second optional argument, though if none is specified there is a default error handler instead.
For example using the function:
local function main()
parallel.waitForAny(
function()
os.run({}, "/rom/programs/shell")
end,
function()
rednet.run()
end
)
end
run(main)
Or if you didn't want rednet running in the background you could use:
local function main()
os.run({}, "/rom/programs/shell")
end
run(main)
From my testing this works for CC1.6+ and should hopefully work for previous versions. It can be used from within the startup program or can be run from anywhere within the shell and will still work.
Download: http://pastebin.com/iU09rXRs
Spoiler
local function run(mainFunc, errFunc)
if type(mainFunc) ~= "function" then
error("Nothing to run", 2)
end
local oldOsShutdown, oldCoroutineStatus = os.shutdown, coroutine.status
local function clearScreen()
term.redirect(type(term.native) == "function" and term.native() or term.native)
term.setBackgroundColour(colours.black)
term.setTextColour(colours.white)
term.setCursorPos(1, 1)
term.setCursorBlink(false)
term.clear()
end
local function coroutineStatusOverride(...)
return "dead"
end
local function osShutdownOverride()
clearScreen()
rednet.close()
os.unloadAPI("rednet")
os.loadAPI("/rom/apis/rednet")
rawset(os, "shutdown", oldOsShutdown)
rawset(coroutine, "status", oldCoroutineStatus)
local ok, err = pcall(mainFunc)
if not ok then
clearScreen()
pcall( function()
if type(errFunc) == "function" then
errFunc(err)
else
printError(err)
print("Press any key to continue")
os.pullEvent("key")
end
end )
end
os.shutdown()
end
rawset(os, "shutdown", osShutdownOverride)
rawset(coroutine, "status", coroutineStatusOverride)
end
